./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8708d72a830c5b897b9a667c6367e709c7302fa81ab6e6c80a90a68a6807b5fb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:35:12,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:35:12,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:35:12,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:35:12,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:35:12,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:35:12,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:35:12,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:35:12,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:35:12,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:35:12,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:35:12,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:35:12,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:35:12,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:35:12,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:35:12,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:35:12,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:35:12,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:35:12,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:35:12,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:35:12,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:35:12,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:35:12,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:35:12,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:35:12,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:35:12,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:35:12,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:35:12,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:35:12,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:35:12,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:35:12,858 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:35:12,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:35:12,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:35:12,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:35:12,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:35:12,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:35:12,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:35:12,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:35:12,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:35:12,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:35:12,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:35:12,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-23 13:35:12,911 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:35:12,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:35:12,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:35:12,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:35:12,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:35:12,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:35:12,914 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:35:12,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:35:12,915 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:35:12,915 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:35:12,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:35:12,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:35:12,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:35:12,916 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:35:12,917 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:35:12,917 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 13:35:12,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:35:12,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:35:12,918 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:35:12,918 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:35:12,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:35:12,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:35:12,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:35:12,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:35:12,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:35:12,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:35:12,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:35:12,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:35:12,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:35:12,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8708d72a830c5b897b9a667c6367e709c7302fa81ab6e6c80a90a68a6807b5fb [2021-11-23 13:35:13,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:35:13,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:35:13,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:35:13,233 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:35:13,235 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:35:13,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-11-23 13:35:13,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/data/bc3dcfd21/1133f837a70042fbae4107931333776e/FLAG825e02c4b [2021-11-23 13:35:13,971 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:35:13,972 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-11-23 13:35:13,985 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/data/bc3dcfd21/1133f837a70042fbae4107931333776e/FLAG825e02c4b [2021-11-23 13:35:14,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/data/bc3dcfd21/1133f837a70042fbae4107931333776e [2021-11-23 13:35:14,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:35:14,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:35:14,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:35:14,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:35:14,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:35:14,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:35:14" (1/1) ... [2021-11-23 13:35:14,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71548e70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:14, skipping insertion in model container [2021-11-23 13:35:14,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:35:14" (1/1) ... [2021-11-23 13:35:14,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:35:14,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:35:14,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2021-11-23 13:35:14,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:35:14,779 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:35:14,853 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2021-11-23 13:35:14,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:35:14,894 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:35:14,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:14 WrapperNode [2021-11-23 13:35:14,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:35:14,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:35:14,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:35:14,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:35:14,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:14" (1/1) ... [2021-11-23 13:35:14,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:14" (1/1) ... [2021-11-23 13:35:14,978 INFO L137 Inliner]: procedures = 125, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 138 [2021-11-23 13:35:14,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:35:14,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:35:14,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:35:14,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:35:14,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:14" (1/1) ... [2021-11-23 13:35:14,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:14" (1/1) ... [2021-11-23 13:35:14,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:14" (1/1) ... [2021-11-23 13:35:14,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:14" (1/1) ... [2021-11-23 13:35:15,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:14" (1/1) ... [2021-11-23 13:35:15,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:14" (1/1) ... [2021-11-23 13:35:15,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:14" (1/1) ... [2021-11-23 13:35:15,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:35:15,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:35:15,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:35:15,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:35:15,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:14" (1/1) ... [2021-11-23 13:35:15,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:35:15,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:15,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:15,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:35:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:35:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:35:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:35:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:35:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:35:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:35:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:35:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:35:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:35:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:35:15,301 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:35:15,303 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:35:15,644 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:35:15,652 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:35:15,652 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 13:35:15,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:35:15 BoogieIcfgContainer [2021-11-23 13:35:15,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:35:15,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:35:15,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:35:15,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:35:15,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:35:14" (1/3) ... [2021-11-23 13:35:15,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7699bb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:35:15, skipping insertion in model container [2021-11-23 13:35:15,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:14" (2/3) ... [2021-11-23 13:35:15,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7699bb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:35:15, skipping insertion in model container [2021-11-23 13:35:15,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:35:15" (3/3) ... [2021-11-23 13:35:15,663 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2021-11-23 13:35:15,668 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:35:15,669 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-23 13:35:15,717 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:35:15,725 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:35:15,725 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-23 13:35:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 90 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:15,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 13:35:15,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:15,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:15,750 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:15,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:15,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1807801548, now seen corresponding path program 1 times [2021-11-23 13:35:15,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:15,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884617802] [2021-11-23 13:35:15,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:15,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:15,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:15,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:15,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884617802] [2021-11-23 13:35:15,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884617802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:15,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:15,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:35:15,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875411199] [2021-11-23 13:35:15,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:15,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:35:15,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:15,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:35:15,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:35:15,964 INFO L87 Difference]: Start difference. First operand has 91 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 90 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:15,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:15,993 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2021-11-23 13:35:15,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:35:15,996 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 13:35:15,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:16,006 INFO L225 Difference]: With dead ends: 91 [2021-11-23 13:35:16,006 INFO L226 Difference]: Without dead ends: 86 [2021-11-23 13:35:16,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:35:16,013 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:16,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:35:16,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-23 13:35:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-11-23 13:35:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 85 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:16,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2021-11-23 13:35:16,067 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 7 [2021-11-23 13:35:16,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:16,068 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2021-11-23 13:35:16,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:16,068 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2021-11-23 13:35:16,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 13:35:16,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:16,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:16,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:35:16,070 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:16,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:16,074 INFO L85 PathProgramCache]: Analyzing trace with hash 206286314, now seen corresponding path program 1 times [2021-11-23 13:35:16,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:16,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959406915] [2021-11-23 13:35:16,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:16,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:16,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:16,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959406915] [2021-11-23 13:35:16,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959406915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:16,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:16,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:35:16,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093252006] [2021-11-23 13:35:16,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:16,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:35:16,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:16,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:35:16,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:35:16,209 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:16,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:16,481 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2021-11-23 13:35:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:35:16,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 13:35:16,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:16,484 INFO L225 Difference]: With dead ends: 107 [2021-11-23 13:35:16,484 INFO L226 Difference]: Without dead ends: 107 [2021-11-23 13:35:16,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:35:16,487 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 160 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:16,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 52 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:35:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-23 13:35:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2021-11-23 13:35:16,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 86 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2021-11-23 13:35:16,498 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 8 [2021-11-23 13:35:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:16,498 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2021-11-23 13:35:16,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2021-11-23 13:35:16,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 13:35:16,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:16,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:16,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:35:16,500 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:16,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:16,501 INFO L85 PathProgramCache]: Analyzing trace with hash 206286315, now seen corresponding path program 1 times [2021-11-23 13:35:16,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:16,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549974032] [2021-11-23 13:35:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:16,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:16,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:16,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549974032] [2021-11-23 13:35:16,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549974032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:16,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:16,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:35:16,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048041455] [2021-11-23 13:35:16,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:16,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:35:16,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:16,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:35:16,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:35:16,567 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:16,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:16,751 INFO L93 Difference]: Finished difference Result 124 states and 137 transitions. [2021-11-23 13:35:16,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:35:16,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 13:35:16,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:16,753 INFO L225 Difference]: With dead ends: 124 [2021-11-23 13:35:16,753 INFO L226 Difference]: Without dead ends: 124 [2021-11-23 13:35:16,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:35:16,755 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 167 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:16,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 60 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:35:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-23 13:35:16,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2021-11-23 13:35:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 80 states have (on average 1.5125) internal successors, (121), 106 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2021-11-23 13:35:16,781 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 8 [2021-11-23 13:35:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:16,781 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2021-11-23 13:35:16,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2021-11-23 13:35:16,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 13:35:16,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:16,783 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:16,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:35:16,784 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:16,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:16,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1364928161, now seen corresponding path program 1 times [2021-11-23 13:35:16,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:16,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608515953] [2021-11-23 13:35:16,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:16,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:16,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:16,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608515953] [2021-11-23 13:35:16,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608515953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:16,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:16,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:35:16,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093990677] [2021-11-23 13:35:16,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:16,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:35:16,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:16,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:35:16,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:35:16,938 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:17,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:17,238 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2021-11-23 13:35:17,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:35:17,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-23 13:35:17,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:17,241 INFO L225 Difference]: With dead ends: 152 [2021-11-23 13:35:17,241 INFO L226 Difference]: Without dead ends: 152 [2021-11-23 13:35:17,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:35:17,243 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 115 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:17,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 240 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:35:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-23 13:35:17,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 111. [2021-11-23 13:35:17,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 85 states have (on average 1.5176470588235293) internal successors, (129), 110 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2021-11-23 13:35:17,252 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 17 [2021-11-23 13:35:17,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:17,252 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2021-11-23 13:35:17,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:17,253 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2021-11-23 13:35:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 13:35:17,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:17,254 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:17,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:35:17,254 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:17,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1364928160, now seen corresponding path program 1 times [2021-11-23 13:35:17,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:17,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257211975] [2021-11-23 13:35:17,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:17,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:17,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:17,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257211975] [2021-11-23 13:35:17,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257211975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:17,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:17,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:35:17,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902585180] [2021-11-23 13:35:17,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:17,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:35:17,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:17,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:35:17,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:35:17,420 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:17,795 INFO L93 Difference]: Finished difference Result 155 states and 176 transitions. [2021-11-23 13:35:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:35:17,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-23 13:35:17,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:17,797 INFO L225 Difference]: With dead ends: 155 [2021-11-23 13:35:17,798 INFO L226 Difference]: Without dead ends: 155 [2021-11-23 13:35:17,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:35:17,799 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 79 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:17,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 307 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:35:17,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-23 13:35:17,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 95. [2021-11-23 13:35:17,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 94 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2021-11-23 13:35:17,809 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 17 [2021-11-23 13:35:17,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:17,809 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2021-11-23 13:35:17,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:17,810 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2021-11-23 13:35:17,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 13:35:17,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:17,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:17,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:35:17,812 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:17,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1479745928, now seen corresponding path program 1 times [2021-11-23 13:35:17,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:17,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908886516] [2021-11-23 13:35:17,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:17,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:17,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:17,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908886516] [2021-11-23 13:35:17,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908886516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:17,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:17,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:35:17,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84170419] [2021-11-23 13:35:17,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:17,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:35:17,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:17,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:35:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:35:17,915 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:18,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:18,123 INFO L93 Difference]: Finished difference Result 187 states and 204 transitions. [2021-11-23 13:35:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:35:18,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 13:35:18,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:18,126 INFO L225 Difference]: With dead ends: 187 [2021-11-23 13:35:18,126 INFO L226 Difference]: Without dead ends: 187 [2021-11-23 13:35:18,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:35:18,128 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 163 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:18,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 206 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:35:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-23 13:35:18,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 106. [2021-11-23 13:35:18,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 105 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2021-11-23 13:35:18,136 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 18 [2021-11-23 13:35:18,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:18,137 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2021-11-23 13:35:18,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2021-11-23 13:35:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 13:35:18,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:18,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:18,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:35:18,139 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:18,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:18,140 INFO L85 PathProgramCache]: Analyzing trace with hash 354031242, now seen corresponding path program 1 times [2021-11-23 13:35:18,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:18,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559679049] [2021-11-23 13:35:18,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:18,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:18,159 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:35:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:18,225 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:35:18,226 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 13:35:18,227 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (37 of 38 remaining) [2021-11-23 13:35:18,229 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (36 of 38 remaining) [2021-11-23 13:35:18,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (35 of 38 remaining) [2021-11-23 13:35:18,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (34 of 38 remaining) [2021-11-23 13:35:18,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (33 of 38 remaining) [2021-11-23 13:35:18,230 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (32 of 38 remaining) [2021-11-23 13:35:18,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (31 of 38 remaining) [2021-11-23 13:35:18,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (30 of 38 remaining) [2021-11-23 13:35:18,231 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (29 of 38 remaining) [2021-11-23 13:35:18,232 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (28 of 38 remaining) [2021-11-23 13:35:18,232 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (27 of 38 remaining) [2021-11-23 13:35:18,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (26 of 38 remaining) [2021-11-23 13:35:18,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (25 of 38 remaining) [2021-11-23 13:35:18,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (24 of 38 remaining) [2021-11-23 13:35:18,233 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (23 of 38 remaining) [2021-11-23 13:35:18,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (22 of 38 remaining) [2021-11-23 13:35:18,234 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (21 of 38 remaining) [2021-11-23 13:35:18,236 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (20 of 38 remaining) [2021-11-23 13:35:18,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (19 of 38 remaining) [2021-11-23 13:35:18,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (18 of 38 remaining) [2021-11-23 13:35:18,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (17 of 38 remaining) [2021-11-23 13:35:18,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (16 of 38 remaining) [2021-11-23 13:35:18,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (15 of 38 remaining) [2021-11-23 13:35:18,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (14 of 38 remaining) [2021-11-23 13:35:18,238 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (13 of 38 remaining) [2021-11-23 13:35:18,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (12 of 38 remaining) [2021-11-23 13:35:18,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (11 of 38 remaining) [2021-11-23 13:35:18,239 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (10 of 38 remaining) [2021-11-23 13:35:18,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (9 of 38 remaining) [2021-11-23 13:35:18,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (8 of 38 remaining) [2021-11-23 13:35:18,240 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (7 of 38 remaining) [2021-11-23 13:35:18,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE (6 of 38 remaining) [2021-11-23 13:35:18,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (5 of 38 remaining) [2021-11-23 13:35:18,241 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (4 of 38 remaining) [2021-11-23 13:35:18,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (3 of 38 remaining) [2021-11-23 13:35:18,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (2 of 38 remaining) [2021-11-23 13:35:18,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (1 of 38 remaining) [2021-11-23 13:35:18,242 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK (0 of 38 remaining) [2021-11-23 13:35:18,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:35:18,247 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:18,252 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:35:18,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:35:18 BoogieIcfgContainer [2021-11-23 13:35:18,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:35:18,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:35:18,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:35:18,317 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:35:18,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:35:15" (3/4) ... [2021-11-23 13:35:18,325 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 13:35:18,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:35:18,326 INFO L158 Benchmark]: Toolchain (without parser) took 4063.17ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 88.4MB in the beginning and 54.3MB in the end (delta: 34.1MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2021-11-23 13:35:18,327 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 117.4MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:35:18,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 630.58ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 88.2MB in the beginning and 109.2MB in the end (delta: -20.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:35:18,328 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.60ms. Allocated memory is still 142.6MB. Free memory was 109.2MB in the beginning and 106.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:35:18,328 INFO L158 Benchmark]: Boogie Preprocessor took 39.49ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 105.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:35:18,329 INFO L158 Benchmark]: RCFGBuilder took 634.42ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 88.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 13:35:18,330 INFO L158 Benchmark]: TraceAbstraction took 2660.06ms. Allocated memory is still 142.6MB. Free memory was 87.8MB in the beginning and 54.3MB in the end (delta: 33.4MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2021-11-23 13:35:18,330 INFO L158 Benchmark]: Witness Printer took 8.95ms. Allocated memory is still 142.6MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:35:18,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 117.4MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 630.58ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 88.2MB in the beginning and 109.2MB in the end (delta: -20.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.60ms. Allocated memory is still 142.6MB. Free memory was 109.2MB in the beginning and 106.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.49ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 105.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 634.42ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 88.4MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2660.06ms. Allocated memory is still 142.6MB. Free memory was 87.8MB in the beginning and 54.3MB in the end (delta: 33.4MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. * Witness Printer took 8.95ms. Allocated memory is still 142.6MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 569]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 569. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); [L536] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, y=0] [L537] List t; [L538] List p = a; VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L539] i < 10 && __VERIFIER_nondet_int() [L539] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, p={-1:0}, y=0] [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] y < 10 && __VERIFIER_nondet_int() [L547] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L556] p->n = (void*)__VERIFIER_nondet_ulong() VAL [__VERIFIER_nondet_ulong()=0, a={-1:0}, i=0, p={-1:0}, y=0] [L557] i = 0 [L558] y = 0 [L559] p = a VAL [a={-1:0}, i=0, p={-1:0}, y=0] [L560] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=3, y=0] [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] reach_error() VAL [a={-1:0}, i=0, p={-1:0}, y=0] - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 91 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 684 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 684 mSDsluCounter, 965 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 562 mSDsCounter, 112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 949 IncrementalHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 112 mSolverCounterUnsat, 403 mSDtfsCounter, 949 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=4, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 219 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 9/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 13:35:18,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8708d72a830c5b897b9a667c6367e709c7302fa81ab6e6c80a90a68a6807b5fb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:35:21,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:35:21,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:35:21,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:35:21,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:35:21,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:35:21,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:35:21,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:35:21,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:35:21,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:35:21,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:35:21,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:35:21,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:35:21,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:35:21,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:35:21,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:35:21,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:35:21,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:35:21,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:35:21,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:35:21,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:35:21,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:35:21,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:35:21,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:35:21,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:35:21,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:35:21,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:35:21,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:35:21,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:35:21,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:35:21,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:35:21,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:35:21,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:35:21,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:35:21,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:35:21,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:35:21,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:35:21,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:35:21,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:35:21,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:35:21,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:35:21,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-23 13:35:21,314 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:35:21,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:35:21,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:35:21,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:35:21,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:35:21,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:35:21,318 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:35:21,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:35:21,320 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:35:21,320 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:35:21,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:35:21,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:35:21,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:35:21,322 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 13:35:21,323 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 13:35:21,323 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 13:35:21,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:35:21,324 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 13:35:21,324 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 13:35:21,324 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 13:35:21,324 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:35:21,325 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:35:21,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:35:21,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:35:21,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:35:21,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:35:21,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:35:21,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:35:21,327 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 13:35:21,327 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 13:35:21,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:35:21,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 13:35:21,328 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8708d72a830c5b897b9a667c6367e709c7302fa81ab6e6c80a90a68a6807b5fb [2021-11-23 13:35:21,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:35:21,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:35:21,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:35:21,820 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:35:21,821 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:35:21,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-11-23 13:35:21,909 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/data/354a48567/53b637a6af55486cbfbc8818762db2b7/FLAGbc230be23 [2021-11-23 13:35:22,559 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:35:22,560 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/sv-benchmarks/c/list-ext-properties/list-ext_2.i [2021-11-23 13:35:22,574 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/data/354a48567/53b637a6af55486cbfbc8818762db2b7/FLAGbc230be23 [2021-11-23 13:35:22,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/data/354a48567/53b637a6af55486cbfbc8818762db2b7 [2021-11-23 13:35:22,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:35:22,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:35:22,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:35:22,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:35:22,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:35:22,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:35:22" (1/1) ... [2021-11-23 13:35:22,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fcea034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:22, skipping insertion in model container [2021-11-23 13:35:22,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:35:22" (1/1) ... [2021-11-23 13:35:22,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:35:22,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:35:23,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2021-11-23 13:35:23,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:35:23,318 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:35:23,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/sv-benchmarks/c/list-ext-properties/list-ext_2.i[23625,23638] [2021-11-23 13:35:23,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:35:23,461 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:35:23,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:23 WrapperNode [2021-11-23 13:35:23,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:35:23,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:35:23,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:35:23,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:35:23,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:23" (1/1) ... [2021-11-23 13:35:23,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:23" (1/1) ... [2021-11-23 13:35:23,557 INFO L137 Inliner]: procedures = 128, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2021-11-23 13:35:23,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:35:23,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:35:23,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:35:23,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:35:23,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:23" (1/1) ... [2021-11-23 13:35:23,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:23" (1/1) ... [2021-11-23 13:35:23,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:23" (1/1) ... [2021-11-23 13:35:23,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:23" (1/1) ... [2021-11-23 13:35:23,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:23" (1/1) ... [2021-11-23 13:35:23,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:23" (1/1) ... [2021-11-23 13:35:23,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:23" (1/1) ... [2021-11-23 13:35:23,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:35:23,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:35:23,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:35:23,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:35:23,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:23" (1/1) ... [2021-11-23 13:35:23,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:35:23,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:23,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:23,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:35:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 13:35:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:35:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:35:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:35:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:35:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:35:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 13:35:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 13:35:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:35:23,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:35:23,903 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:35:23,913 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:35:24,513 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:35:24,521 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:35:24,521 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-23 13:35:24,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:35:24 BoogieIcfgContainer [2021-11-23 13:35:24,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:35:24,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:35:24,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:35:24,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:35:24,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:35:22" (1/3) ... [2021-11-23 13:35:24,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670d1dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:35:24, skipping insertion in model container [2021-11-23 13:35:24,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:23" (2/3) ... [2021-11-23 13:35:24,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670d1dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:35:24, skipping insertion in model container [2021-11-23 13:35:24,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:35:24" (3/3) ... [2021-11-23 13:35:24,539 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext_2.i [2021-11-23 13:35:24,552 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:35:24,552 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2021-11-23 13:35:24,601 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:35:24,609 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:35:24,609 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-11-23 13:35:24,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 86 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:24,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 13:35:24,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:24,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 13:35:24,658 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:24,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:24,673 INFO L85 PathProgramCache]: Analyzing trace with hash 889599271, now seen corresponding path program 1 times [2021-11-23 13:35:24,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:24,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998669569] [2021-11-23 13:35:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:24,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:24,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:24,693 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:24,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 13:35:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:24,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:35:24,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:24,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:35:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:24,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:24,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:35:24,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998669569] [2021-11-23 13:35:24,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1998669569] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:24,985 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:24,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 13:35:24,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104269709] [2021-11-23 13:35:24,989 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:24,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:35:24,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:35:25,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:35:25,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:35:25,034 INFO L87 Difference]: Start difference. First operand has 87 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 86 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:25,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:25,523 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2021-11-23 13:35:25,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:35:25,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 13:35:25,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:25,537 INFO L225 Difference]: With dead ends: 104 [2021-11-23 13:35:25,537 INFO L226 Difference]: Without dead ends: 99 [2021-11-23 13:35:25,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:35:25,543 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 154 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:25,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 50 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:35:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-23 13:35:25,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 79. [2021-11-23 13:35:25,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 52 states have (on average 1.75) internal successors, (91), 78 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2021-11-23 13:35:25,608 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 6 [2021-11-23 13:35:25,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:25,608 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2021-11-23 13:35:25,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2021-11-23 13:35:25,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 13:35:25,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:25,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 13:35:25,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:25,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:25,811 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:25,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:25,812 INFO L85 PathProgramCache]: Analyzing trace with hash 889599272, now seen corresponding path program 1 times [2021-11-23 13:35:25,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:25,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970927197] [2021-11-23 13:35:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:25,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:25,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:25,815 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:25,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 13:35:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:25,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:35:25,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:25,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:35:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:26,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:26,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:35:26,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970927197] [2021-11-23 13:35:26,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970927197] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:26,203 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:26,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-23 13:35:26,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106785543] [2021-11-23 13:35:26,204 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:26,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:35:26,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:35:26,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:35:26,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:35:26,207 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:26,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:26,944 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2021-11-23 13:35:26,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:35:26,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 13:35:26,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:26,948 INFO L225 Difference]: With dead ends: 115 [2021-11-23 13:35:26,948 INFO L226 Difference]: Without dead ends: 115 [2021-11-23 13:35:26,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:35:26,951 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 272 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:26,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 58 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:35:26,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-23 13:35:26,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2021-11-23 13:35:26,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 96 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:26,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2021-11-23 13:35:26,964 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 6 [2021-11-23 13:35:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:26,965 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2021-11-23 13:35:26,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:26,965 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2021-11-23 13:35:26,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 13:35:26,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:26,967 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:26,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:27,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:27,170 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:27,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:27,171 INFO L85 PathProgramCache]: Analyzing trace with hash 903973752, now seen corresponding path program 1 times [2021-11-23 13:35:27,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:27,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329299048] [2021-11-23 13:35:27,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:27,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:27,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:27,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:27,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 13:35:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:27,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:35:27,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:27,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:35:27,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-23 13:35:27,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 13:35:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:27,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:27,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:35:27,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329299048] [2021-11-23 13:35:27,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329299048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:27,476 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:27,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 13:35:27,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413319941] [2021-11-23 13:35:27,477 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:27,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:35:27,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:35:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:35:27,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:35:27,479 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:28,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:28,284 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2021-11-23 13:35:28,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:35:28,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 13:35:28,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:28,289 INFO L225 Difference]: With dead ends: 136 [2021-11-23 13:35:28,289 INFO L226 Difference]: Without dead ends: 136 [2021-11-23 13:35:28,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:35:28,292 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 102 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:28,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 180 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:35:28,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-23 13:35:28,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 99. [2021-11-23 13:35:28,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 74 states have (on average 1.5) internal successors, (111), 98 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2021-11-23 13:35:28,305 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 13 [2021-11-23 13:35:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:28,305 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2021-11-23 13:35:28,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:28,306 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2021-11-23 13:35:28,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 13:35:28,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:28,307 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:28,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:28,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:28,523 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:28,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:28,524 INFO L85 PathProgramCache]: Analyzing trace with hash 903973753, now seen corresponding path program 1 times [2021-11-23 13:35:28,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:28,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935825149] [2021-11-23 13:35:28,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:28,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:28,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:28,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:28,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 13:35:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:28,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:35:28,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:28,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:35:28,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-23 13:35:28,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 13:35:28,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-23 13:35:28,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-23 13:35:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:28,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:29,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:35:29,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935825149] [2021-11-23 13:35:29,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935825149] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:29,301 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:29,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-23 13:35:29,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25755443] [2021-11-23 13:35:29,302 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:29,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:35:29,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:35:29,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:35:29,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:35:29,304 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:31,221 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2021-11-23 13:35:31,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:35:31,222 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 13:35:31,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:31,224 INFO L225 Difference]: With dead ends: 141 [2021-11-23 13:35:31,224 INFO L226 Difference]: Without dead ends: 141 [2021-11-23 13:35:31,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:35:31,227 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 84 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:31,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 316 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-23 13:35:31,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-23 13:35:31,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 87. [2021-11-23 13:35:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.4615384615384615) internal successors, (95), 86 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:31,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2021-11-23 13:35:31,238 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 13 [2021-11-23 13:35:31,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:31,238 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2021-11-23 13:35:31,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:31,239 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2021-11-23 13:35:31,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:35:31,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:31,240 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:31,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:31,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:31,444 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:31,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:31,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1381288014, now seen corresponding path program 1 times [2021-11-23 13:35:31,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:31,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381685076] [2021-11-23 13:35:31,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:31,447 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:31,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:31,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:31,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 13:35:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:31,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:35:31,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:31,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:35:31,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-23 13:35:31,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-23 13:35:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:31,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:31,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:35:31,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381685076] [2021-11-23 13:35:31,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381685076] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:31,704 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:31,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 13:35:31,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79133279] [2021-11-23 13:35:31,705 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:31,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:35:31,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:35:31,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:35:31,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:35:31,706 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:32,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:32,245 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2021-11-23 13:35:32,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:35:32,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 13:35:32,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:32,247 INFO L225 Difference]: With dead ends: 128 [2021-11-23 13:35:32,247 INFO L226 Difference]: Without dead ends: 128 [2021-11-23 13:35:32,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:35:32,249 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 95 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:32,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 172 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 13:35:32,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-23 13:35:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 85. [2021-11-23 13:35:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 84 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2021-11-23 13:35:32,259 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 14 [2021-11-23 13:35:32,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:32,260 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2021-11-23 13:35:32,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2021-11-23 13:35:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:35:32,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:32,262 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:32,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:32,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:32,474 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:32,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:32,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1381288015, now seen corresponding path program 1 times [2021-11-23 13:35:32,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:32,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161614968] [2021-11-23 13:35:32,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:32,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:32,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:32,477 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:32,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 13:35:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:32,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:35:32,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:32,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:35:32,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-23 13:35:32,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 13:35:32,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-23 13:35:32,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-23 13:35:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:32,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:33,058 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:35:33,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161614968] [2021-11-23 13:35:33,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161614968] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:33,059 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:33,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-23 13:35:33,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181814657] [2021-11-23 13:35:33,059 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:33,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:35:33,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:35:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:35:33,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:35:33,061 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:34,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:34,303 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2021-11-23 13:35:34,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:35:34,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 13:35:34,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:34,306 INFO L225 Difference]: With dead ends: 127 [2021-11-23 13:35:34,306 INFO L226 Difference]: Without dead ends: 127 [2021-11-23 13:35:34,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:35:34,308 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 81 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:34,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 256 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 13:35:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-23 13:35:34,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 72. [2021-11-23 13:35:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 71 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2021-11-23 13:35:34,316 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 14 [2021-11-23 13:35:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:34,317 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2021-11-23 13:35:34,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2021-11-23 13:35:34,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 13:35:34,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:34,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:34,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:34,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:34,528 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:34,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:34,529 INFO L85 PathProgramCache]: Analyzing trace with hash 638736065, now seen corresponding path program 1 times [2021-11-23 13:35:34,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:34,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868100190] [2021-11-23 13:35:34,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:34,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:34,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:34,531 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:34,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 13:35:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:34,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:35:34,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:34,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 13:35:34,727 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-23 13:35:34,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-11-23 13:35:34,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 13:35:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:34,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:34,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2021-11-23 13:35:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:34,968 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 13:35:34,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868100190] [2021-11-23 13:35:34,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868100190] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:34,968 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:34,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-23 13:35:34,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723350814] [2021-11-23 13:35:34,969 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:34,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:35:34,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 13:35:34,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:35:34,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:35:34,970 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:35,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:35,701 INFO L93 Difference]: Finished difference Result 167 states and 178 transitions. [2021-11-23 13:35:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:35:35,702 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 13:35:35,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:35,703 INFO L225 Difference]: With dead ends: 167 [2021-11-23 13:35:35,704 INFO L226 Difference]: Without dead ends: 167 [2021-11-23 13:35:35,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:35:35,705 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 232 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:35,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 216 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 216 Invalid, 0 Unknown, 27 Unchecked, 0.6s Time] [2021-11-23 13:35:35,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-23 13:35:35,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 79. [2021-11-23 13:35:35,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 64 states have (on average 1.375) internal successors, (88), 78 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:35,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2021-11-23 13:35:35,728 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2021-11-23 13:35:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:35,728 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2021-11-23 13:35:35,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2021-11-23 13:35:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 13:35:35,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:35,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:35,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:35,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:35,944 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 34 more)] === [2021-11-23 13:35:35,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:35,945 INFO L85 PathProgramCache]: Analyzing trace with hash -402595901, now seen corresponding path program 1 times [2021-11-23 13:35:35,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 13:35:35,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626401694] [2021-11-23 13:35:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:35,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 13:35:35,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 13:35:35,948 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 13:35:35,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 13:35:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:36,029 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:35:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:36,095 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-23 13:35:36,096 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 13:35:36,097 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (37 of 38 remaining) [2021-11-23 13:35:36,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (36 of 38 remaining) [2021-11-23 13:35:36,099 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (35 of 38 remaining) [2021-11-23 13:35:36,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (34 of 38 remaining) [2021-11-23 13:35:36,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (33 of 38 remaining) [2021-11-23 13:35:36,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (32 of 38 remaining) [2021-11-23 13:35:36,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (31 of 38 remaining) [2021-11-23 13:35:36,100 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (30 of 38 remaining) [2021-11-23 13:35:36,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (29 of 38 remaining) [2021-11-23 13:35:36,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (28 of 38 remaining) [2021-11-23 13:35:36,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (27 of 38 remaining) [2021-11-23 13:35:36,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (26 of 38 remaining) [2021-11-23 13:35:36,101 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (25 of 38 remaining) [2021-11-23 13:35:36,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (24 of 38 remaining) [2021-11-23 13:35:36,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (23 of 38 remaining) [2021-11-23 13:35:36,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (22 of 38 remaining) [2021-11-23 13:35:36,102 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (21 of 38 remaining) [2021-11-23 13:35:36,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (20 of 38 remaining) [2021-11-23 13:35:36,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (19 of 38 remaining) [2021-11-23 13:35:36,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (18 of 38 remaining) [2021-11-23 13:35:36,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (17 of 38 remaining) [2021-11-23 13:35:36,103 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (16 of 38 remaining) [2021-11-23 13:35:36,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (15 of 38 remaining) [2021-11-23 13:35:36,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION (14 of 38 remaining) [2021-11-23 13:35:36,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION (13 of 38 remaining) [2021-11-23 13:35:36,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION (12 of 38 remaining) [2021-11-23 13:35:36,104 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION (11 of 38 remaining) [2021-11-23 13:35:36,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION (10 of 38 remaining) [2021-11-23 13:35:36,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION (9 of 38 remaining) [2021-11-23 13:35:36,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION (8 of 38 remaining) [2021-11-23 13:35:36,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION (7 of 38 remaining) [2021-11-23 13:35:36,105 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE (6 of 38 remaining) [2021-11-23 13:35:36,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (5 of 38 remaining) [2021-11-23 13:35:36,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (4 of 38 remaining) [2021-11-23 13:35:36,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (3 of 38 remaining) [2021-11-23 13:35:36,106 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (2 of 38 remaining) [2021-11-23 13:35:36,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (1 of 38 remaining) [2021-11-23 13:35:36,107 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK (0 of 38 remaining) [2021-11-23 13:35:36,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:36,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 13:35:36,321 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:36,326 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:35:36,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:35:36 BoogieIcfgContainer [2021-11-23 13:35:36,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:35:36,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:35:36,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:35:36,359 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:35:36,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:35:24" (3/4) ... [2021-11-23 13:35:36,364 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 13:35:36,364 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:35:36,365 INFO L158 Benchmark]: Toolchain (without parser) took 13554.57ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 48.3MB in the beginning and 74.7MB in the end (delta: -26.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:35:36,366 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:35:36,366 INFO L158 Benchmark]: CACSL2BoogieTranslator took 649.07ms. Allocated memory is still 83.9MB. Free memory was 48.1MB in the beginning and 55.0MB in the end (delta: -6.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2021-11-23 13:35:36,367 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.23ms. Allocated memory is still 83.9MB. Free memory was 54.8MB in the beginning and 52.5MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 13:35:36,367 INFO L158 Benchmark]: Boogie Preprocessor took 70.72ms. Allocated memory is still 83.9MB. Free memory was 52.5MB in the beginning and 50.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:35:36,368 INFO L158 Benchmark]: RCFGBuilder took 898.41ms. Allocated memory is still 83.9MB. Free memory was 50.8MB in the beginning and 62.9MB in the end (delta: -12.1MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2021-11-23 13:35:36,368 INFO L158 Benchmark]: TraceAbstraction took 11827.34ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 62.5MB in the beginning and 74.7MB in the end (delta: -12.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-11-23 13:35:36,369 INFO L158 Benchmark]: Witness Printer took 5.82ms. Allocated memory is still 102.8MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:35:36,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 649.07ms. Allocated memory is still 83.9MB. Free memory was 48.1MB in the beginning and 55.0MB in the end (delta: -6.9MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.23ms. Allocated memory is still 83.9MB. Free memory was 54.8MB in the beginning and 52.5MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.72ms. Allocated memory is still 83.9MB. Free memory was 52.5MB in the beginning and 50.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 898.41ms. Allocated memory is still 83.9MB. Free memory was 50.8MB in the beginning and 62.9MB in the end (delta: -12.1MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * TraceAbstraction took 11827.34ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 62.5MB in the beginning and 74.7MB in the end (delta: -12.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Witness Printer took 5.82ms. Allocated memory is still 102.8MB. Free memory is still 74.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 569]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 569. Possible FailurePath: [L533] int i = 0; [L534] int y = 0; [L535] List a = (List) malloc(sizeof(struct node)); [L536] COND FALSE !(a == 0) VAL [a={6:0}, i=0, y=0] [L537] List t; [L538] List p = a; VAL [a={6:0}, i=0, p={6:0}, y=0] [L539] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L547] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L555] p->h = 3 VAL [a={6:0}, i=0, p={6:0}, y=0] [L556] p->n = (void*)__VERIFIER_nondet_ulong() VAL [__VERIFIER_nondet_ulong()=0, a={6:0}, i=0, p={6:0}, y=0] [L557] i = 0 [L558] y = 0 [L559] p = a VAL [a={6:0}, i=0, p={6:0}, y=0] [L560] EXPR p->h VAL [a={6:0}, i=0, p={6:0}, p->h=3, y=0] [L560] COND FALSE !(p->h == 1) [L564] EXPR p->h VAL [a={6:0}, i=0, p={6:0}, p->h=3, y=0] [L564] COND FALSE !(p->h == 2) [L568] EXPR p->h VAL [a={6:0}, i=0, p={6:0}, p->h=3, y=0] [L568] COND TRUE p->h != 3 || (i + y) < 20 [L569] reach_error() VAL [a={6:0}, i=0, p={6:0}, y=0] - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 544]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 562]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 564]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 566]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 568]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 573]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 532]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 38 error locations. Started 1 CEGAR loops. OverallTime: 11.7s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1020 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1020 mSDsluCounter, 1248 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 27 IncrementalHoareTripleChecker+Unchecked, 869 mSDsCounter, 185 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1683 IncrementalHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 185 mSolverCounterUnsat, 379 mSDtfsCounter, 1683 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 105 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=3, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 315 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 146 ConstructedInterpolants, 1 QuantifiedInterpolants, 918 SizeOfPredicates, 31 NumberOfNonLiveVariables, 365 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 18/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 13:35:36,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_914b7040-392a-4e33-9f9f-0d07fdd7bcd9/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample